APA (7th ed.) Citation

Museum of London. Board of Governors & Great Britain. Ordnance Survey. (1983). Londinium, a descriptive map and guide to Roman London (2nd ed. 1983.). Director General of the Ordnance Survey.

Chicago Style (17th ed.) Citation

Museum of London. Board of Governors and Great Britain. Ordnance Survey. Londinium, a Descriptive Map and Guide to Roman London. 2nd ed. 1983. Southampton: Director General of the Ordnance Survey, 1983.

MLA (9th ed.) Citation

Museum of London. Board of Governors and Great Britain. Ordnance Survey. Londinium, a Descriptive Map and Guide to Roman London. 2nd ed. 1983. Director General of the Ordnance Survey, 1983.